[Intel-gfx] [PATCH v4 3/3] drm/i915/icl: Cleanup combo PHY aux power well handlers

[Matt Roper]

On Fri, Dec 13, 2019 at 10:06:01AM -0800, Lucas De Marchi wrote:
> On Thu, Dec 12, 2019 at 05:06:00PM -0800, Matt Roper wrote:
> > Now that the combo PHY aux power well handlers are used exclusively on
> > Icelake, we can drop a bunch of the extra tests.
> > 
> > v2: Don't try to use intel_uncore_rmw for register updates yet; there's
> >    pending display uncore patches that need to land first.  (Lucas)
> > 
> > v3: Drop the combo phy assertion.  It was backward before, but doesn't
> >    seem terribly necessary.  I'm keeping the IS_ICELAKE assertion
> >    though since we often copy/paste/modify the power well tables when
> >    defining new platforms and it's too easy to cargo cult the
> >    ICL-specific handling to new platforms that shouldn't use it.
> >    (Lucas)
> > 
> > v4: Fix build; forgot to commit all the changes.  (CI)
> > 
> > Cc: Lucas De Marchi <lucas.demarchi at intel.com>
> > Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
> > ---
> > .../drm/i915/display/intel_display_power.c    | 20 +++++++------------
> > 1 file changed, 7 insertions(+), 13 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
> > index 52f2332e0ab8..d59539002aaa 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> > @@ -418,7 +418,8 @@ icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
> > 	int pw_idx = power_well->desc->hsw.idx;
> > 	enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
> > 	u32 val;
> > -	int wa_idx_max;
> > +
> > +	WARN_ON(!IS_ICELAKE(dev_priv));
> > 
> > 	val = I915_READ(regs->driver);
> > 	I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
> > @@ -430,14 +431,7 @@ icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
> > 
> > 	hsw_wait_for_power_well_enable(dev_priv, power_well);
> > 
> > -	/* Display WA #1178: icl, tgl */
> 
> this comment must stay

Woops, yes.  Re-added (minus the tgl) while applying.  Thanks for the
reviews.


Matt

> 
> Otherwise
> 
> 
> Reviewed-by: Lucas De Marchi <lucas.demarchi at intel.com>
> 
> Lucas De Marchi
> 
> > -	if (IS_TIGERLAKE(dev_priv))
> > -		wa_idx_max = ICL_PW_CTL_IDX_AUX_C;
> > -	else
> > -		wa_idx_max = ICL_PW_CTL_IDX_AUX_B;
> > -
> > -	if (!IS_ELKHARTLAKE(dev_priv) &&
> > -	    pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= wa_idx_max &&
> > +	if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
> > 	    !intel_bios_is_port_edp(dev_priv, (enum port)phy)) {
> > 		val = I915_READ(ICL_AUX_ANAOVRD1(pw_idx));
> > 		val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
> > @@ -454,10 +448,10 @@ icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
> > 	enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
> > 	u32 val;
> > 
> > -	if (INTEL_GEN(dev_priv) < 12) {
> > -		val = I915_READ(ICL_PORT_CL_DW12(phy));
> > -		I915_WRITE(ICL_PORT_CL_DW12(phy), val & ~ICL_LANE_ENABLE_AUX);
> > -	}
> > +	WARN_ON(!IS_ICELAKE(dev_priv));
> > +
> > +	val = I915_READ(ICL_PORT_CL_DW12(phy));
> > +	I915_WRITE(ICL_PORT_CL_DW12(phy), val & ~ICL_LANE_ENABLE_AUX);
> > 
> > 	val = I915_READ(regs->driver);
> > 	I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
> > -- 
> > 2.23.0
> > 
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
(916) 356-2795